Safety device for mine cars



J. PUGH SAFETY DEVICE FOR MI N,E- CARS Jan. 9,19%.

Filed Aug. 15. 1989 2 Sheets-$heet 1 A ttorneys J .9,194o.: J,PUG 2,186,390

5.1mm, DEIVICE or; MINE' GAR-5 "Filed Aug. 15, "1959 I '2 Sheets-Sheet 2 mg, Z

Inventor By @MM A iiomeus Patented Jam I SAFETY DEVICE For; MINE CARS I John Pugh. Pennington Gap, Va., assignorof forty-ninef'per cent to Earl P. ,Sinyth, Sit N Charles, Va.

1 Application a .15, 1939, Serial No. 290,287

The vpresent invention relates to newand useful improvements in safety devices for mine cars and has for its primary object to provide,

' in a manner as hereinafter set forth,'an auto -matic brake of a novel construction and arrangement which is adapted for attachment tothe rear end of a trip or train of cars and which will positively prevent said cars from rolling backa safety device for mine cars of the character described which will be comparatively simple in 1 construction, strong, durable, highly efficient and V reliable in use, compact. and which maybe man-- ufactured at low cost. 1 I All of the foregoing'and still further objects and advantages of the invention will becomeapparent from a study of the following specification, taken in connection with the accompanying drawings wherein like-characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a View inside elevation of a mine car, showing a device constructed in accordance with the present invention connected thereto.

Figure 2 is a view in vertical longitudinal'section through the device.

Figure 3 is a topyplan View of the device, Figure 4 is a bottom plan view.

Figure 5 is a cross sectional view, taken 'substantially' on the line 5-5 of Fig. 2.

Figure 6 is a; cross-sectional'view, taken substantially on theline 6-6 of Fig. 2. g Referring now to the drawings in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a metallic,

dog I which is substantially similar in cross sectional shape to a conventional railroad rail. The

dog I is providedfwith a beveled forward end I 2 and a rounded rear end 3.

Journaled in a suitable bearing 4 on the for-- wardend portion of the dog'l is a transverse pin 5. The reference numeralfi designates a coupling link through the medium of which'the dog I is pivotally and detachably connectedto the rear end of a conventional mine car, as at l. The link 6' is adapted to receive the usual pin 8 of the car I. The ends of the link 6 are secured to the end portions of the pin 5 1b y substantially U.-shaped straps 9. At least one of the .straps9 is fixed, as by welding,,to the pin 5 for preventing loss of said pins I It will thus be seen that the dog I islconnected to the rearendof the mine car 1 for swinging 5 movement in, a vertical plane. Rising from the forward end of the dog I is a T-member III which limits the upward swinging movement of the link 6 on the dog I. 'A carrying and attaching handle -II is provided on the forward portion 10 of the dog I, the'forward end of said-handle being fixed to the Tmember ID.

Mounted on theforward portion of 'theidog I is a substantially triangular brace I2 of suitable metal which is engageable with a. frame member" 1 of the-mine car I for supporting said dog I against twistingor turning. As illustrated to advantage in Fig. 5 of the drawings, the brace I2 extends beneath the base or lower portion of the dog I andhas its'intermediat'e portion welded thereto, the ends ofsaid brace being welded to the ball or upper-portion of said dog I.

Fixed longitudinally on the bottom of the dog I immediately to the rear of. the brace I2 is a substantially triangular metallic stop- I3'which 25 l is engageable beneath the aforementioned car frame member, for preventing bending. of the draw bar. and for driving the dog into the'ground between the ties. The stop' or lug I3 islaterallybraced or reinforced, as at I4. 30

,It is thought that the manner in which the devicefunctions will be readily apparent from a consideration of the foregoing. As the car I moves forwardlyv the dog I is dragged therebe hind, said dog being pulled across the ties I5 of 3 I the track I6. Should one or more of the cars of the train or trip break loose and start to roll back down the hill the dog I is driven'into the road bed against one of, the ties I5 for arrestingand positively holding the cars. Asherein- 40 before stated, the brace I2' is adapted to bear against a frame member of the car for supporting the dog'I against twisting or turning movement while the stop or lug I3 is-adapted to engage-beneath said frame member for pre- 45 venting the draw bar from being damagedand for driving said dog into the ground. The construction and arrangement is such that the device may be expeditiously attached toflthe mine car even while the train or trip is moving. g 50 It is believed that the many advantages of an automatic safety device formine cars con- I structed in accordance with the present invention will be readily understood and although a preferred embodiment'of said device as illustrated I transversely on the pivoted end portion of the dog and adapted for abutting engagement with a member of the frame of the mine car for supporting said dog against turning movement.

2. A safety device of the character described for mine cars of the type including a frame, comprising a dog, means for pivotally connecting said dog at one end to a mine car for swing- 20 ing movement in a vertical plane, a substantially triangular brace mounted transversely on the pivoted end portion of the dog and adapted for abutting engagement with a member of the frame of the mine car for supporting said dog against turning movement, and a stop mounted longitudinally beneath the dog rearwardly of the brace and engageable beneath the frame member of the mine car when said dog is in operative position.

3. A safety device of the character described for mine cars comprising a dog, a substantially U-shaped link pivotally mounted for swinging movement in a vertical plane on one end portion of said dog and adapted for connection with'a mine car, a T-member fixed on said one end por-- tion of the dog and engageablewith said link for limiting the swinging movement of same in one-direction relative to the dog, and a handle mounted on the dog and having one end secured to said T-member.

JOHN PUGH. 

